Re: Problems with a new Ryzen-based PC

May I bet that you are not using the latest rtai-5.1-test1? My bet is 
based on the fact that it fail at rt_lxrt_invoke.

Paolo.

On 12/18/2017 09:13 PM, Duane AW. Jeffery wrote:
>
> Hi all,
>
> It’s been a while since I wrote to the list, but I’m back with a new 
> problem.  Once again the hardware we use has reached end-of-life, and 
> I’m left to try and get our RTAI system working on some new modern 
> hardware.
>
> New system:
>
> AMD Ryzen 3 1200
>
> Gigabyte A320M-HD2
>
> 1TB WD Blue
>
> MSI Radeon HD 6450
>
> Installing our usual software (Linux 4.1.18, RTAI… 5? I think) on it 
> mostly works, except that our RT-enabled programs freeze the system 
> (mouse and keyboard unresponsive, display frozen) on attempting to 
> start them, and I notice during bootup where we insmod the various 
> RTAI modules that on insmod of rtai_sched, I get a kernel bug:
>
> BUG: unable to handle kernel paging request at 00007ffde855f1e0
>
> Attached is a photo of the full kernel bug readout.
>
> I tried recompiling the kernel, RTAI, and our software on the new 
> machine to no avail.   Manually running the latency tests in the 
> testsuite appears to work and give reasonable latencies.
>
> Anybody have any idea where things are falling down?
>
> -Duane Jeffery
>
>
>
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